To achieve a parsimonious model, we removed the paths that did not reach statistical significance from the hypothetical model, and according to the modification index (MI), added a correlation path between the residuals of intrinsic motivation and extrinsic motivation.
Thus, rather than assigning an arbitrary value, this study selected the very indicator with the negative variance to be fixed to one (instead of the originally fixed indicator) or added a correlation path between the disturbance and another; the validity of this correction has been confirmed [56, 57].
Removing CreatU from the independent variables (used to eliminate any residual influence of diuresis) did not alter the above results but revealed an added negative correlation of B2MS with CdB (data not shown).
Polychoric correlations of subsample A are presented in an additional file, we added polychoric correlations of subsample B into this file (see Additional file 1: Polychoric correlations of health locus of control items using subsamples A and B).
Multivariate analysis confirmed in most cases the previous findings and added additional correlations for level of education (visiting and intimacy) and marital status (comfort and visiting).
I would add the correlation between calorie restriction and successful weight loss.
Consequently, the solutions of MTHS problem become more realistic by adding such correlation to simulations.
It improves on the Hartree-Fock method by adding electron correlation effects by means of the Rayleigh-Schrödinger perturbation theory (RS-PT), usually to the second (MP2), third (MP3), or fourth (MP4) order.
The results of chi-square difference test also showed that the modified model was superior to the original model (Δx 2 = 492.37, df = 6, p < .01) and further confirmed that adding a correlation coefficient between intrinsic motivation and extrinsic motivation residuals significantly improved the model fit.
To do this the authors could add a correlation analysis among variables, or, perhaps the authors could detail a few case examples?
We find the maximum score function and add a correlation between the factors in consecutive time slices or the same time slice if the relationship increases the score function.
